We present an ion trap with an integrated fiber cavity, designed for strong coupling at the
level of single ions and photons. The cavity is aligned to the axis of a miniature linear Paul …

We describe the use of laser-enhanced etching of fused silica in order to build multilayer ion
traps. This technique offers high precision of both machining and alignment of adjacent …

We probe electric-field noise in a surface ion trap for ion-surface distances d between 50
and 300 µm in the normal and planar directions. We find the noise distance dependence to …

Trapped-ion applications, such as in quantum information, precision measurements, optical
clocks, and mass spectrometry, rely on specialized high-performance ion traps. The latter …

We demonstrate coupling between the motions of two independently trapped ions with a
separation distance of 620 μ m. The ion-ion interaction is enhanced via a room-temperature …

The surface-electrode ion trap is one of the key devices in modern ion-trapping apparatus to
host the ion qubits for quantum computing. Surface traps fabricated on the silicon substrate …

This thesis reports the design, construction, and characterisation of a cryogenic linear Paul
ion trap chamber. This cryogenic ion trap chamber will be combined with a magnetic guide …

Recent studies indicated that contamination by adatoms on the surface ion trap can
generate contact potential, leading to fluctuations in patch potential. By investigating …

All surfaces generate electric-field noise, yet the physical origins of this noise are not well
understood. This has been an active area of research in the ion trapping community for the …

Frequency shifts of red-and blue-scattered (Stokes/anti-Stokes) side-bands in quantum
optomechanics are shown to be counter-intuitively inequal, resulting in an unexpected …